Articles with good lubricating property, swab applicator, shaft and piston of swab applicator

FIELD: chemistry.

SUBSTANCE: lubricated polymer composition from which an article is made contains one or more polymers which are low-density polyethylene in amount ranging from approximately 95% to approximately 99.5% of the total weight of the composition, and one or more lubricating substances. The one or more lubricating substances are selected from a group comprising erucamide, sterile erucamide, bis-erucamide and any of combination thereof.

EFFECT: obtained articles have high softness, flexibility and oiliness.

33 cl, 7 tbl, 25 ex

 

The present invention relates to compositions with good snasiwenastiu.

1. The scope of the invention

The present invention relates to compositions with good snasiwenastiu. More specifically, the present invention relates to molded articles, such as applicators swabs made from the composition characterized by good snasiwenastiu.

2. Description of the prior art

Consumers interested in buying tampons with applicator, which are soft, easy to enter and easy to retrieve at different ambient conditions. In addition, some consumers are experiencing dryness of the vagina and especially need to be lubricated and moisturizing swabs.

Manufacturers tampon require applicators made from affordable materials that are light, easy handling and cost-effective for mass production, and also in tampons, which can be collected with a high speed only by a small modification of existing equipment. Current offerings tampons do not have any of these signs.

Although in the prior art mentioned various lubricants, as a way of improving the slip in the technical literature does not describe a specific lubricant or resin, which is to use, to improve this slide, specific quantitative improvement or process and the modification of machines that are required for the production of moulded articles containing such lubricants that will allow for mass production with high performance.

Accordingly, there remains a need in the technology for the production of molded products, such as tampon applicators which are efficient in production and have properties such as softness, flexibility and good smazyvaete desired by the consumer. The present invention meets that need by providing a lubricated polymer composition and articles molded from lubricated polymeric composition.

SUMMARY of INVENTION

The present invention provides a lubricated polymer composition which comprises a polymer and one or more lubricants.

The present invention also provides such a composition that provides increased oiliness of the product, which is generated from the specified structure.

The present invention also provides an applicator swab, which is formed from the lubricated polymer composition.

The present invention additionally provides a tampon applicator having improved oiliness.

This izobreteny which also provides a process of forming the applicator swab with the specified lubricated polymer composition.

To achieve the above goals and advantages, the present invention provides a lubricated polymer composition which comprises a polymer and one or more lubricants. Products that are formed from the lubricated polymer compositions have an increased softness, flexibility and oiliness. In one example implementation of one or more products in the form of an applicator swab injection molded from the composition with good snasiwenastiu.

The present invention also provides methods to create and build products that are formed from grease polymeric composition comprising a polymer and one or more lubricants. In one example implementation described process for forming one or more components of the tampon applicator.

DETAILED description of the INVENTION

The present invention provides the composition with good snasiwenastiu. As defined here, smazyvaete means ensuring a smooth and slippery surface. Composition with good snasiwenastiu is a polymer or a composition that comprises a polymer and one or more lubricants. Products formed from this composition with good snasiwenastiu, provide the user with improved properties, such as softness, flexibility and assistant. Although it is believed that this improved polymer composition can be used for the formation of many products, for example for forming bottles with formula, nipple-pacifiers, toothbrushes and tanks, its preferred application relates to the field of devices that improve comfort during menstruation. In one embodiment, the improved polymer composition is used in forming one or more products in the form of a tampon applicator.

The source component of improved polymeric composition is one or more polymers. Suitable polymers for use in the present invention include, without limitation, polyolefins such as polyethylene, low density polyethylene, high density polyethylene, medium-density polyethylene, block copolymers consisting of polyethylene or polystyrene in the form of a single block and polyisoprene, polybutadiene or other elastomeric polymer, and other block-polymer, polypropylene, polyethylene terephthalate (PET), nylon, polystyrene, PVC skin, polymethylmethacrylate; biodegradable or water-soluble polymers, such as thermoplastic, plastic starch, polyvinyl alcohol, aliphatic and/or aromatic polyesters, or combinations thereof.

In one embodiment of the present izobreteniya is a combination of high density polyethylene and low density polyethylene. In another embodiment of the present invention the polymer is a low density polyethylene.

In yet another exemplary embodiment of the present invention, the polymer has about 50 percent by weight (% by weight) to about 99% by weight of the total weight of the polymer composition. In another embodiment, the polymer is about 80% by weight to about 99% by weight of the total weight of the polymer composition. In another embodiment, the polymer has about 95% by weight to about 99.5 per cent by weight of the total weight of the polymeric composition.

Another important component of the polymer composition of the present invention is one or more lubricants are present in a quantity sufficient to use the oiliness of the product, which is formed from a polymeric composition.

Suitable lubricating substance for use in the present invention include, without limitation, fatty acid amide, erucamide, oleamide, stearic acid amide, erucamide stearic acid, bis-erucamide, metal stearate, calcium stearate, ethylene bis-stearic acid amide, bis-oleamide ethylene, glycerol monostearate, magnesium stearate, calcium stearate, zinc stearate, di-aluminum stearate, glycerol esters of fatty acids, calcium soap Antanovich acids, triglycerides hydroacustic fatty acid, a copolymer of methyl is crylate ethylene, Teflon (polytetrafluoroethylene), finely ground PTFE, petroleum products, PTFE micropowder, C14-18 alkyl di-(2-oksietilenom Amin), alkane sulfonates, sodium, such as nucrel, dimetilan and other siloxanes of Palitana (such as supplied by Dow-Coming medical fluid 360, which have different viscosity, t-butyltrichlorosilane, other polar aromatic and aliphatic silanes, such as chlorotrimethylsilane, epoxysilane soybean oil, oxidized polyethylene wax, gel (K-Y, glycerol or any combination of these compounds.

You can use other comparable types of lubricants and/or resins, some of them in the form of mixtures. Many of them are similar surface-active substances, i.e. they are hydrophobic and have a polar functionality. Polar functionality has a tendency to allow this material to migrate to the surface.

In one embodiment of the present invention, one or more lubricants include erucamide, erucamide stearic acid, bis-erucamide or any combination of these substances. Erucamide have been found especially useful, as they can vyparivat after injection molding. This wypadanie may end migration erucamide on the surface of the molded polymer product, which can act the appear is very good snasiwenastiu cast products. It was found that it is advantageous to mold the barrel of the tampon applicator and/or the plunger of the polymeric compositions of the present invention by injection molding.

In the polymer compositions of the present invention has one or more lubricants in an amount of about 0,001% by weight to about 40% by weight based on the total weight of the polymeric composition. Preferably, one or more lubricants are present in an amount of about 0.01 percent by weight to about 20% by weight, based on the total weight of the polymeric composition. More preferably, one or more lubricants are present in an amount of about 0.1% by weight to about 1% by weight, based on the total weight of the polymeric composition. In one example implementation uses one or more substances of the type erucamide in amount from about 0.12% by weight to about 0,55% by weight, based on the total weight of the polymeric composition.

The polymer composition may further include one or more additional components selected from the group consisting of thermoplastic elastomer, a softener, an agent that improves the compatibility, flow modifier, a dye, agent, creates a pearlescent effect, antioxidant, antistatic agent, filler, hardener, dye, mineral, surfactant, stabilizer ul is rayalitova radiation, stabilizer thermal radiation modifying additives that increase the impact resistance of a substance to improve the processing properties, filler, moderator burning, pesticide, fungicide, antiozonant, foam, or any combination of these substances.

There is a wide variety of additives and resins, which are known qualified specialists in the field of plastics technology. The level of use of plastics varies depending on the application. Examples of additives can be found in scientific works, such as Additives to plastic masses, edited by. J. Thuen and N. Mehlberg, publisher D.A.T.A & International Plastics Selector, Inc., San Diego, California, 1987. Examples of plastics presented in the review of D.A.T.A.; plastics, thermoplastics and thermosetting materials, volume 1 and 2, publisher D.A.T.A & International Plastics Selector, Inc., San Diego, California, 1990.

In one embodiment of the present invention, it is desirable to use one or more coloring agents and the agent that creates the pearl effect. Suitable dyes and the agent that creates the pearl effect for use in the present invention may include, without limitation, titanium dioxide, mica, colorant, carbon black, ether phthalic acid, hendredon, blue phthalate ester of phthalic acid, chronologicly lead, inorganic Alamos the Licata, cadmium, cadmium sulfide, barite, or any combination of these substances. In one embodiment of the invention uses a mixture of titanium dioxide, mica and dye.

When using dye (and the agent that creates the pearl effect) is present in an amount of from about 0.01% by weight to about 5% by weight, based on the total weight of the polymeric composition. Preferably the dye is present in an amount of from about 0.2% by weight to about 2% by weight based on the total weight of the polymeric composition. In a more preferred embodiment of the invention, the dye is present in an amount of from about 0.5% by weight to about 1.2% by weight based on the total weight of the polymeric composition.

It should be understood that the polymer or the composition may be added to the antistatic agent or an antistatic agent. Antistatic agent to some extent reduces the conductivity of the plastic, preventing, thus, the accumulation of electrostatic charges on the molded product. However, it was found that due to the polar functionality associated with one or another number of lubricants of the present invention, the need for anti-static agent may be reduced or it may not be used.

Although the polymer composition may be made by any suitable method known in this area of the equipment, in one embodiment of the present invention the polymer composition is made up as follows. All ingredients are weighed and then placed in a twin-screw extruder for forming a molten composition. The molten composition is then extruded and cut into pellets, which are then subjected to injection molding for forming the desired molded product.

To further demonstrate new aspects of the present invention, injection molded tampon applicators, which are formed from the polymeric compositions of the present invention, are described below. These examples are in no way intended to limit the scope of the present invention.

In one embodiment of the invention where it is desirable to minimize costs, it is preferable that the applicator swab would be the barrel of the applicator, which uses the polymer of the present invention, while the plunger may be made of a cheaper material. Soft barrel of the applicator is more convenient and is a desirable characteristic of an applicator swab, which provides ease of entry. Accordingly, the examples relate to the barrel of the tampon applicator, however, it should be understood that any component of the applicator tampon, including the barrel and the plunger, it is possible to form the polymer composition of the present invention.

In one embodiment of the present invention the barrel of the tampon applicator formed from a polymeric composition having from about 98% by weight to about 99% by weight of low density polyethylene (LDPE), about 0.6% by weight of mica, about 0.5% by weight of titanium dioxide, about 0.25% by weight of erucamide and less than about 0.01% by weight of dye.

In another embodiment of the present invention, the plunger of the applicator tampon formed from a polymeric composition having from about 92% by weight to about 93% by weight of high density polyethylene (HDPE), about 5% by weight of LDPE, about 0.9 percent by weight of mica, about 0.75% by weight of titanium dioxide, about 0.37% of the weight erucamide and less than about 0.01% by weight of dye.

EXAMPLES

First of all, LDPE should be added various additives reduce friction and resin. Most of these ingredients has been approved by the Department for sanitary supervision of food and drug administration (USA). Typically, these ingredients are mixed with dyes, minerals and some of LDPE to get a special dye concentrates/supplements reduce friction. Both of these concentrate (Royal mix) and additional LDPE were simultaneously entered in the injection molding machine. In some cases, concentrate the dye was not added, while in other cases, we added three with the components: grease, resin or uterine mixture, as one submission; concentrate dye and LDPE.

Mixing is usually performed using an extruder, in which the ingredients are usually thermoplastics or other lubricants with an average molecular weight, mixed, melted at high temperature and then transferred by a conveyor into a marking device, which turned out to tablets using a granulator. Some additives, such as dimeticone, are liquids and may require special extruders capable of processing fluid.

The following table 1 lists some of the components that were used in the examples, and the companies that supply or manufacture these components.

td align="center"> Low-density polyethylene (without erucamide) DuPont/ Clariant
Table 1
Components used in the examples
ComponentAbbreviations used
used in examples
Trade name/markManufacturerNote
ErucamideERCrodamide ECroda(also comes in other firms, for example Cromptonand Akzo Nobel)
LDPEMarlex KN226Chevron Phillips(also comes in other companies, such as ExxonMobil)
Low-density polyethylene (erucamide)LDPE-ERMarlex KN226B*"
Ethylene bis-stearic acid amideELSAdvawax 280Rohm and Haas
Glycerol monostearateMSGAdvalube F1005"
The ethylene copolymer of methyl acrylateEFMElvaloy 1224 EACSTDuPont
The micron TeflonMTTeflon PFA Type 350"
D-C14-SLI di(2-hydroxyethyl amine)CECesa Stat-TPI-3103
Moisturizing polymerPackDPO AD1059DuPont (developmental product)Antistatic
Royal blend of nucrel-sodium alkanesulfonylBUTHostaStat-WR 990139DuPont/ Clariant
Dimetilan with a viscosity of 350 CSTDM-350Medical Fluid 360, 350 est.Dow-Corning
Dimetilan with a viscosity of 1000 CSTDM-1000Medical Fluid 360,1000 est."
A mixture of 72% K-Y-jelly/28% glycerolK-Y/GK-Y Jelly and GlycerolMcNeil PPC (J&J)Glycerin is available from many sources

Table 2 presents the composition of the barrel of the tampon, which were compiled to illustrate the present invention. In most examples for forming the barrel of the applicator (with absorbing with what osobnosti) used standard mold company Standard Super Glide. In example 9 for the manufacture of the barrel of a smaller size were used ordinary mold, while in examples 10-17 and comparative example 2 was used to press-form a new design.

Table 2
Additional components for various examples (the number of LDPE and a lubricating substance (s) presented in the right column)
Example 1Additional componentsThe CAS number for these componentsThe number used in the trunkLDPE and lubricants
No.1Mica12001-26-20,6785%98.85% of LDPE,
Titanium dioxide13463-67-70,2025%is 0.135%ER
The zinc stearate557-05-10,1245%
Dyes:<0,01%
ultra is marine blue 57455-37-5(total
andandnumber
pigment red980-26-7both)
122
Comparative example 1Mica12001-26-20,6785%98,99% LDPE,
Titanium dioxide13463-67-70,2025%no lubricant
The zinc stearate557-05-10,1245%
Dyes:<0,01%
ultramarine blue57455-37-5(total
andand number
pigment red980-26-7both)
122
No.2Mica12001-26-20,6785%98,71% LDPE,
Titanium dioxide13463-67-70,2025%0,270% ER
The zinc stearate557-05-10,1245%
Dyes:<0,01%
ultramarine blue57455-37-5(total
andandnumber
pigment red980-26-7both)
122
No.3Mica12001-26-20,848%98,46% LDPE,
Titanium dioxide13463-67-70,253%0,270% ER
The zinc stearate557-05-10,156%
Dye:<0,01%
ultramarine blue57455-37-5
No. 4Mica12001-26-20,6785%98,44% LDPE,
Titanium dioxide13463-67-70,2025%0,540% ER
The zinc stearate557-05-10,1245%
Dyes:<0,01%
ultramarine blue57455-37-5(total
andandnumber
pigment red980-26-7both)
122
No.5 (same as N.2)Mica12001-26-20,6785%98,71% LDPE,
Titanium dioxide13463-67-70,2025%0,270% ER
The zinc stearate557-05-10,1245%
Dyes:<0,01%
ultramarine blue57455-37-5(total
andandnumber
pigment red980-26-7both)
122
No.6Mica12001-26-20,6785%98,98% LDPE,
Titanium dioxide13463-67-70,2025%of 0.005% (50
The zinc stearate557-05-10,1245%parts
Dyes:<0,01%million) ER
ultramarine blue57455-37-5(total
andandnumber
980-26-7both)
122
No.7Mica12001-26-20,6785%98,26% LDPE,
Titanium dioxide13463-67-70,2025%0,27% ER,
The zinc stearate557-05-10,1245%0,45% ELS
Dyes:<0,01%
ultramarine blue57455-37-5(total
andandnumber
pigment red
122
980-26-7both)
No.8Mica 12001-26-20,6785%98,26% LDPE,
Titanium dioxide13463-67-70,2025%0,27% ER,
The zinc stearate557-05-10,1245%0,45% MSG
Dyes:<0,01%
ultramarine blue57455-37-5(total
andandnumber
pigment red980-26-7both)
122
No.9Mica12001-26-20,6785%98,71% LDPE,
Titanium dioxide13463-67-7 0,2025%0,27% ER
The zinc stearate557-05-10,1245%
Dyes:<0,01%
ultramarine blue57455-37-5(total
andandnumber
pigment red980-26-7both)
122
No.10Mica12001-26-20,808%84,51% LDPE,
Titanium dioxide13463-67-70,241%14.3%of the ESM
The zinc stearate557-05-10,148%
Dye:<0,01%
ultramarine blue57455-37-5
No.11Mica12001-26-20,808%79,75% LDPE,
Titanium dioxide13463-67-70,241%19.0%MT
The zinc stearate557-05-10,148%
Dye:<0,01%
ultramarine blue57455-37-5
No.12Mica12001-26-20,808%89,27% LDPE,
Titanium dioxide13463-67-70,241%9,5% CE
With earth zinc
Dye:
ultramarine blue
557-05-1

57455-37-5
0,148%

<0,01%
No.13Mica12001-26-20,808%65,46% LDPE,
Titanium dioxide
The zinc stearate
13463-67-7
557-05-1
0,241%
0,148%
33.3% of pack
Dye:
ultramarine blue
57455-37-5<0,01%
No.14Mica12001-26-20,808%89,27% LDPE,
Titanium dioxide13463-67-70,241%9,5% BUT
The zinc stearate557-05-10,148%
Dye:
ultramarine blue
57455-37-5<0,01%
No.5 Mica12001-26-20,808%89,27% LDPE,
Titanium dioxide13463-67-70,241%9.5% of DM-350
The zinc stearate557-05-10,148%
Dye:
ultramarine blue
57455-37-5<0,01%
No.16Mica12001-26-20,808%89,27% LDPE,
Titanium dioxide13463-67-70,241%9.5%of DM-1000
The zinc stearate557-05-10,148%
Dye:
ultramarine blue
57455-37-5<0,01%
Comparative example 2Mica12001-26-2 0,808%98,73% LDPE,
Titanium dioxide13463-67-70,241%no lubricant
The zinc stearate557-05-10,148%
Dye:
ultramarine blue
57455-37-5<0,01%
No.17Mica12001-26-20,808%of 95.94% LDPE,
Titanium dioxide13463-67-70,241%2,86% of a mix
Stearate of zinc
Dye:
ultramarine blue
557-05-1

57455-37-5
0,148%

<0,01%
of 82% KY-
Jelly and 18% glycerol

For the manufacture of many cast parts of the barrel of the applicator used a large injection molding machine of the type Nestal HP 3500 (components in examples 1-8 and comparative Example 1 in table 2). This bench press form provided fast and efficient manufacture of the barrel of the applicator there is it. Small injection molding machine with a single press form was used for the manufacture of the barrel in examples 9 to 17 and comparative example 2.

Most CT had a high quality. Formed trunks applicator swab had a very high quality. Many of the applicators were visually inspected and, in fact, found no signs of scratches or abrasion.

Trunks applicator tampons were then checked, using various tests, mainly those related to the measurement of oiliness. Used HP machine 400 is described in U.S. patent 4 321 993, issued in the name of Alfred Hengstmann and Erich Presser company (Hauni Richmond, Inc) March 30, 1982. This patent (hereinafter referred to as 993) describes in detail the machine 400 HP. Patent "993 incorporated herein by reference.

In the first trials were collected swabs of example 6 and comparative example No.2. The problem was that the barrels are made of components that are used in other examples, were so slippery that they are in some cases just fell out of these machines. Sometimes the trunks fell when raising terminating elements (position 47 in figure 4 of the patent '993), sometimes from the surge hopper shafts (item 26 on figure 2 of the patent '993), sometimes from the pipeline (item 23 in the patent '993)used in the subassembly (pozitia in patent '993), sometimes directly from the heating drum (item 31 in the patent '993) or from the cooling drum (item 32 in the patent '993). Loss of tampons was so big that the whole process was unreliable. Transfer between drums or disks or bunkers depended on the level of friction of the barrel of the applicator.

Therefore, a second test was performed on two modified cars forming tampons 400 HP (Playtex Hauni). When preparing for this test used the same structures (fallopian mixture of dyes), but when injection moulding received new batch of barrels. Has been used in various molding machines, but were implemented similar examples. It does not have any problems with injection moulding. Examples of trunks and tampons made in these and subsequent tests, marked with "R" in the following tables.

In the second test brought together all the tampons, even those of example No.4R, characterized by high levels of lubricants, they could be assembled without any problems. It has been unexpectedly found that one key modification has ended a successful trial. Change transmission between the different bins, drums and discs (see patent '993) was achieved by use of vacuum. It was found that, typically, about 60+inches of water (not the nogo more than 2.2 pounds per square inch of negative pressure) should be created and distributed in the car, using the collectors in different locations in the car, for example, in the transfer drum to effectively produce/collect swabs with slippery trunks. The use of suction instead of friction allows the slippery trunks to stay on these drums instead of slipping with carriers and holders because of the action of gravitational and centrifugal forces.

Additional modifications included: (1) the use of a hopper feeder (firm Service Engineering, Inc., Greenfield, Indiana, USA), to serve and to Orient the stems properly instead of raising the slippery trunks, (2) the media used to transfer swabs from one drum carousel to the other and where were soft and less abrasive material; (3) installation of a small protective belt to eliminate incorrect slipping trunks from the hopper, and (4) was provided some protection in-place hold plunger or piston inside the barrel when assembling these parts of the applicator to the UE 400.

The use of these machines and modifications, to the surprise of the authors, even the most slippery trunks could be collected for a high-quality swabs clean, easily, economically and effectively with high performance required for mass production of medical devices class II, adjustable what's standards of Management on sanitary inspection behind quality of foodstuff and medicines.

DESCRIPTION of TESTS AND RESULTS

Were performed various tests to show the benefits of the new lubricated tampon applicators. In General, the test results are presented for both the first and second tests.

EXTRACTION FORCE

Extraction force swab was measured in the laboratory using a special test. The collected swab was grasped by two fingers on both sides of the handle. For this measurement extraction force tampon in oz was measured on a scale of a torque sensor high precision (type - Weightronix WI-130). Data were recorded in a spreadsheet. The swab samples were also tested by the device Playtex Glide®. Table 3 presents some key results of the testing efforts retrieval.

Table 3. Measurement efforts extract tampons

The results of the first tests

Examples
(identification of the trunk)
The average extraction force (oz)The standard deviation and the number of iterationsNote
Comparative No.128,57,7(10)Without ER, super
A smooth change in gliding the 32,13,8(10)Without ER, super
No.518,07,7(10)0,27% ER, short cycle time of the casting, super
No.715,44,4(10)ER+ELS, super
No.420,011,3(10)0,54% ER, super

The results of the second test

No.1R21,61,8 (33)is 0.135% ER, super
Comparative No.1R33,53,9 (33)Without ER, super
No.6R35,13,9 (33)50 ppm ER, a mixture of resins, super
No.2R21,01,1 (33)0,27% ER, repeat,super
No.5R20,82,2 (33) 0,27% ER, short cycle time of the casting, repeat, super
No.4R20,41,9 (33)0,54% ER, repeat, super
No.9R16,81,8 (33)0,27% ER, repeat, standard

Although these data show some variability, there are large differences in the extraction force experienced tampons trunk which contains is 0.135% or more erucamide compared to those that contain very little (50 ppm) erucamide or do not contain it at all. According to the present invention, the extraction force is less than 21 ounces. Moreover, it seems that as soon as a lubricating substance reaches a certain critical value, the extraction force is stabilized.

RESISTANCE TO EXTERNAL INFLUENCES

Sustainability tampons to external influences is very important. Often consumers store their tampons in warm and humid environments. Because tampons are made from fibers of cellulose polymer at high temperature and high humidity in these tampons may increase the moisture content, exerting some pressure on the walls of the barrel of the applicator and making it difficult to remove the tampon.

To check out ostoich the stability of tampons to external influence, unpacked the trunks of the applicator swab was placed in a test chamber for one week. Then the trunks were removed and re-tested on the extraction force. Table 4 presents the test results.

Table 4
Sustainability tampons to external influences (force extraction was measured again after holding loose tampons at a temperature of 33°C and a relative humidity of 90% for one week)
Examples
(identification of the trunk)
The average extraction force (oz)The standard deviation and the number of iterationsNote
No.1R75,6the 11.6 (27)is 0.135% ER, super
Smooth change slide92,413,5 (16)Without ER, super
Comparative No.1R109,15,8 (11)Without ER, super
No.6R100,39,1 (15) 50 ppm ER, a mixture of resins, super
No.2R73,4to 12.3 (14)0,27% ER, repeat, super
No.5R68,88,8 (15)0,27% ER, short cycle time of the casting, repeat, super
No.4R72,213,4 (14)0,54% ER, repeat, super
No.9R30,04,6 (14)0,27% ER, repeat, standard

As with the initial values the efforts of the extract presented in table 3, table 4 shows that the stability of tampons to the effects of the environment, the content, at least, is 0.135% erucamide much better than resistance comparable control groups or tampons, in which the level of erucamide is 50 parts per million or below.

The COEFFICIENT of FRICTION

Samples trunks applicator swabs were tested for coefficient of friction (CT). CT was measured using the manual D1894 ASMT (American society for testing and materials), adapted for tampons, because this test often uses the I for films. We used two different cutoff machine brand "Instron" 4411, one for the first test and another for the second test. Software IX Windows with modern machines such as "Instron" allows for the testing program, stored in the database.

Small changes, which the authors performed to measure the coefficient of friction on tampons and barrel, was as follows:

(1) One end of a thin nylon rope was attached to the hook hanging from the top of the machine "Instron" (which had a torque sensor 500 N), and the other was attached to the hook, which was connected to a small sled stainless steel, size 3×4 inches, which were covered with felt and mounted on a long plate (6×18-inch) stainless steel. The rope ran through a pulley at the edge of the specified plate and was redirected vertically at a 90° angle to the upper part of the bursting machine "Instron".

(2) was Checked or four barrel or four fully assembled tampon (i.e. with a swab plunger and barrel and cut the laces, so they had no resistance to the motion of the plate stainless steel). The test items were attached to the bottom of the sled with the petals of the barrel facing the bursting machine "Instron" 4411, and installed so as to be flush with arena side of the sled.

(3) the Carrier, including tampons were weighed on an analytical balance top loading with an accuracy of +/ - 0.1 gram.

(4) Rails were installed on the hob in stainless steel with back tampons almost flush with the rear edge of the plate and with the tense rope.

(5) Breaking machine "Instron" trinovantes and calibrated to ensure that the weight and position for the various series of tests would be compared on an equal basis.

(6) Breaking machine "Instron" stretched the sled at a constant speed in the direction of a torque sensor with a constant cable tension. Traction was carried out with a speed of 6 inches per minute until the full travel of 5 inches. The data collection system was accompanied by a load at a distance of 200-500 points x-y.

(7) Static coefficient of friction was determined as the maximum load required to move the sled for the first 0.1 inch, divided by the total weight of the carrier plus tampons. Because we used two different machines "Instron" with very slight difference in calibration procedures, the static friction coefficient was normalized by measuring it first for the comparative sample of example (or N.1 or No.1R), then all other static friction coefficients were divided by this value. This allows you to put all the odds on an equivalent basis is E.

(8) the Kinetic coefficient of friction was determined as the average load required to move the sled with tampons from 0.1 inch to 5 inches, dividing the total weight of the carrier plus tampons. Normalization was carried out using a procedure identical to that described above for the static coefficients of friction.

(9) As a rule, the procedure was repeated at least two or three times, mainly because of the variability associated with this test.

(10) Calculations and statistical comparisons were performed by loading the data obtained from the machine "Instron" 4411, Microsoft Excel spreadsheet to perform further analysis.

Results for the normalized coefficients of friction measured by the method described above, are presented in table 5. The unnormalized coefficients were in the range of 0.2 to 0.3, as observed for sheets of polyethylene of low density, as reported in the report "Engineering Properties of Marlex™ Resins, CD, titled "Technical literature about casting and customers durable Goods", obtained from Chevron Phillips Chemical Company, Barnesville, DC.

Table 5. The results of measuring the friction coefficient (CT)

The first test

Examples
(identification of the trunk)
Type CT (static
or kinetic) and
the product (trunk or
tampons in the collection)
Average normalized-
tion CT
Standard
otklonenie e (KT)
The number of iterationsNote
ComparativeStatic1,000,184Without ER
ComparativeStatic1,000,098Without ER
ComparativeKinetic1,000,124Without ER
ComparativeKinetic1,000,088Without ER
No.2Static0,800,0940,27% ER
N.2 Static0,820,1440,27% ER
No.2Kinetic0,860,0740,27% ER
No.2Kinetic0,840,1140,27% ER
No.5Static0,820,0540,27% ER, fast casting
No.5Kinetic0,830,0340,27% ER, fast casting
No.4Static0,810,0740,54% ER
No.4Kinetic0,800,054 0,54% ER
No.7Static0,930,054ER and ELS
No.7Kinetic0,920,054ER and ELS
No.8Static0,950,064ER and MSG
No.8Static0,870,094ER and MSG
No.8Kinetic0,910,094ER and MSG
No.8Kinetic0,890,104ER and MSG

The second test

Comparative Static1,000,054Without ER, super
ComparativeKinetic1,000,234Without ER, super
No.6RStatic1,03NA150 ppm ER, super resin
No.6RKinetic0,88NA150 ppm ER, super resin
No.1RStatic0,840,002is 0.135% ER, super
No.1RKinetic0,820,082is 0.135% ER, super
No.4RStatic1,03 NA10,54% ER, super
No.4RKinetic0,75NA10,54% ER, super
No.5RStatic0,840,0020,27% ER, fast casting, repetition
No.5RKinetic0,820,0820,27% ER, fast casting, repetition
No.9RStatic0,960,0020,27% ER, standard
No.9RKinetic0,800,0820,27% ER, standard

As shown in table 5, even though there is some disagreement over the unnormalized coefficients, the introduction of various lubricants according to the present izopet is to reduce friction, in contrast to the comparative examples, regardless of whether the test is conducted trunks or tampons and whether the measurement of static or kinetic friction coefficient. In particular, the components of the tampon formed from the composition according to the present invention, show the average normalized coefficient of friction from about 5% to about 20% and more specifically from about 10% to about 20%, less than the average value of the normalized coefficient of friction for the comparative examples without lubricants.

ABSORBENT CAPACITY TEST "SINGIN"

Absorbent capacity test "Singin" is a very important characteristic of tampons. Check absorptive capacity in the machine "Singin" is used by Management for sanitary supervision of food and drug administration (FDA) in the United States to control tampons and ensure their safety for use by consumers. Test Singin" is a standard test (see Federal register, FDA, 21 CFR, section 1 (release from 4.1.95), paragraph 801, 430, "Labeling for menstrual tampons"). Tampons with better absorptive capacity ("super") are determined by this test as able to absorb 9-12 grams of liquid, while conventional tampons should be able to absorb the liquid in point is adalah 6-9 grams. 90% of the swabs should be within this range for 90% of the time.

Table 6 shows the test results Singin for tampons, made according to the present invention.

Table 6

Examples
(identification of the trunk)
The average absorption capacity "Singin(grams)The standard deviation and the number of iterationsNote
No.1R10,880,42 (33)is 0.135% ER, super
Comparative No.1R10,870,67 (33)Without ER, super
No.6Rof 10.580,44 (33)50 ppm ER, a mixture of resins, super
No.2R10,770,43 (33)0,27% ER, repeat, super
No.5R10,860,52 (33)0,27% ER, short cycle time of the casting, repeat, super
No.4R 10,800,39 (33)0,54% ER, repeat, super
No.9R7,720,38 (33)0,27% ER, repeat, standard

As follows from these data, a lubricating substance has no effect on the absorptive capacity test "Singin". In addition, as a standard swabs, and swabs of the highest quality ("super"), well are within the specified ranges, regulated by the U.S. government.

PROFILOMETRY, TRUNKS TAMPONS

Surface smoothness was measured using a profilometer type Pocket Surf II. This portable device has a diamond stylus that is used to contact with a solid object. Leading the stylus across the surface of the object can be read by the digital scale RMS change in surface roughness in microns.

Table 7 presents data on the surface roughness of the trunk obtained by measuring the above-described device. The average measured surface smoothness of slightly lower for the first test on the second test. This difference is probably caused by the different roughness of the surfaces of the cavities used in various molding machines. Not revealed any statistical proof will naturally the tion of the effect of lubricants on the surface smoothness of the barrel with this test.

Table 7. The smooth surface of the barrel

The first test

Examples (identification of the trunk)The average roughness (microns)The standard deviation and the number of iterationsNote
Comparative No.10,7060,096 (32)Without ER, super
No.50,7500,107 (32)0,27% ER, short cycle time, super
No.40,7690.104 g (32)0,54% ER, super

The second test

Smooth change slide0,8560,129 (12)Super
Smooth change slide0,9120,113 (12)Standard
No.4R0,8650,068 (12)0,54% ER, super, p is Deut
No.9R0,8860,091 (12)0,27% ER, repeat, standard
No.6R0,8790,145 (12)50 ppm ER, a mixture of resins, super

Although the present invention has been described in relation to one or more exemplary embodiments of the invention, the professionals understand what can be done various changes and modifications replacement of individual elements, without leaving the scope of the invention. In addition, can be made of various modifications in order to adapt the device to a particular situation or to use different materials, without leaving the scope of the invention. Therefore, the invention is not limited to the particular disclosed example (examples) for carrying out the invention is presented as the best option its implementation.

1. The product formed from the lubricated polymer composition containing:
one or more polymers are low density polyethylene, and the specified one or more polymers are present in an amount of from about 95% by weight to about 99.5 per cent by weight of the total weight of the specified polymer compositions, and
one or more smasis the participating substances, selected from the group consisting of erucamide, sterilized erucamide, bis-erucamide and any combination thereof,
moreover, the specified product is selected from the group consisting of child horn, bottles with a nutrient mixture, holder, nipples and a toothbrush.

2. The product of claim 1, wherein the specified one or more polymers optionally contain one or more polymers selected from the group consisting of polyolefin, polyethylene, high density polyethylene, medium-density polyethylene; and a containing block copolymers consisting of polyethylene or polystyrene in the form of a single block, and polyisoprene, polybutadiene or other elastomeric polymer in the form of another block; polypropylene, polyethylene terephthalate, nylon, polystyrene, PVC skin, polymethylmethacrylate, biodegradable polymers, water-soluble polymer, thermoplastic, plastic starch, polyvinyl alcohol, aliphatic polyester, aromatic polyester, and any combinations of these compounds.

3. The product of claim 1, wherein the specified one or more polymers optionally contain a combination of high density polyethylene.

4. The product of claim 1, wherein the specified one or more lubricants are erucamide.

5. The product according to claim 1, in which the specified composition additionally includes one or several what to components, selected from the group consisting of thermoplastic elastomer, a softener, a modifier, an agent that improves compatibility/consumption, dye, antioxidant, antistatic agent, filler, hardener, dye, mineral agent, creates a pearlescent effect, surfactants, stabilizers, ultraviolet radiation stabilizer thermal radiation modifying additives that increase the impact resistance of a substance to improve the processing properties, filler, moderator burning, pesticide, fungicide, antiozonant, foaming agent, and any combinations of these compounds.

6. The product according to claim 5, in which the specified one or more components are one or more dyes and the agent that creates the pearl effect selected from the group consisting of titanium dioxide, mica, colorant, carbon black, esters of phthalic acid, hendredon red, phthalazine ester of phthalic acid, hromovokislyj lead, inorganic silicate, sulphoselenide cadmium, cadmium sulfide, barite, and any combinations of these compounds.

7. The product according to claim 6, in which the specified one or more coloring agents and the agent that creates the pearl effect is present in amount from about 0.01% by weight to about 5% by weight based on the total weight of the specified polymer composition.

8. The product is about to claim 1, in which the specified composition additionally includes one or more antistatic agents.

9. The product according to claim 1, in which one or more polymers are a combination of high density polyethylene and low density polyethylene.

10. The product according to claim 9, in which the composition consists essentially of the specified one or more polymers and the specified one or more lubricants.

11. The product according to claim 1, in which one or more lubricants are present in an amount of from about 0.1% by weight to about 0.5% by weight of the total weight of the specified polymer composition.

12. The product according to claim 1, in which one or more lubricants are present in an amount of from about 0.12% by weight to about 0.5% by weight of the total weight of the specified polymer composition.

13. The tampon applicator comprising a barrel and a plunger, the barrel formed from the lubricated polymer composition, including:
one or more polymers, and the specified one or more polymers are present in an amount of from about 95% by weight to about 99.5 per cent by weight of the total weight of the specified polymer composition,
and one or more lubricants contains erucamide, and the specified trunk is made with the possibility of extracting with an average force of less than 593,

14. The applicator according to item 13, wherein said CTB is l is the normalized coefficient of friction from about 5% to about 20% less than the normalized coefficient of friction of the barrel, which is formed from a composition of one or more lubricants.

15. The applicator according to item 13, in which the specified one or more polymers selected from the group consisting of polyolefin, polyethylene, low density polyethylene, high density polyethylene, medium-density polyethylene; block copolymers consisting of polyethylene or polystyrene in the form of one block and polyisoprene, polybutadiene or other elastomeric polymer in the form of another block; polypropylene, polyethylene terephthalate, nylon, polystyrene, PVC skin, polymethylmethacrylate, biodegradable polymer, water soluble polymer, thermoplastic, plastic starch, polyvinyl alcohol, aliphatic polyester, aromatic polyester, and any combinations of these compounds.

16. The applicator according to item 13, in which the specified one or more polymers is a combination of high density polyethylene and low density polyethylene.

17. The applicator according to item 13, in which the specified one or more polymers is a low density polyethylene.

18. The applicator according to item 13, in which the specified one or more lubricants include other lubricating substance selected from the group consisting of bis-erucamide, oleamide, amide stearic acid, stearate m is metal, ethylene bis-stearic acid amide, bis-oleamide ethylene, monostearate of glycerol, di-aluminum stearate, esters of glycerol fatty acid calcium soap based montenuovo wax, triglycerides hydroacustic fatty acid, a copolymer of ethylene methyl acrylate, Teflon (polytetrafluoroethylene), micronized polytetrafluoroethylene, petroleum products, PTFE micropowder, C14-18 alkyl di-(2-oksietilenom amine, alkane sulfonates, sodium, nucrel, Dimethicone, siloxanes of Palitana, t-butyltrichlorosilane, polar aromatic silanes, polar aliphatic silane, chlorotrimethylsilane, epoksidirovaniya soybean oil, oxidized polyethylene wax, gel (K-Y, glycerin, and any combinations of these compounds.

19. The applicator according to item 13, in which the specified composition additionally includes one or more components selected from the group consisting of thermoplastic elastomer, a softener, an agent that improves compatibility/flow modifier, a dye, an antioxidant, antistatic agent, filler, hardener, dye, mineral agent, creates a pearlescent effect, surfactants, stabilizers, ultraviolet radiation stabilizer thermal radiation modifying additives that increase the impact strength, moderator burning, funghi is IDA, pesticide, antiozonant, blowing agent, foaming agent, and any combination of these substances.

20. The applicator according to claim 19, in which the specified one or more components comprise one or more pigments and the agent that creates the pearl effect selected from the group consisting of titanium dioxide, mica, colorant, carbon black, esters of phthalic acid, hendredon red, phthalazine ester of phthalic acid, hromovokislyj lead, inorganic silicate, sulphoselenide cadmium, cadmium sulfide, barite, and any combinations of these compounds.

21. The applicator according to claim 20, which includes the one or more pigments and the agent that creates the pearl effect, present in an amount of from 0.5% by weight to about 1.2% by weight based on the total weight of the specified polymer composition.

22. The applicator according to item 13, in which the specified composition further comprises one or more antistatic agents.

23. The applicator according to item 13, in which the specified composition includes one antistatic agent.

24. The applicator according to item 13, in which the specified one or more polymers is a combination of high density polyethylene and low density polyethylene.

25. The applicator according to item 13, in which the composition consists essentially of the specified one or more polymers and the specified one or more blur the surrounding substances.

26. The applicator according to item 13, in which one or more lubricants are present in an amount of from about 0.1% by weight to about 0.5% by weight of the total weight of the specified polymer composition.

27. The applicator according to item 13, in which one or more lubricants are present in an amount of from about 0.12% by weight to about 0.5% by weight of the total weight of the specified polymer composition.

28. The barrel of the tampon applicator formed from a polymeric composition comprising from about 98% by weight to about 99% by weight of low density polyethylene, about 0.6% by weight of mica, about 0.5% by weight of titanium dioxide, about 0.25% by weight of erucamide and less than about 0.01% by weight of dye.

29. The plunger of the applicator tampon formed from a polymeric composition comprising from about 92% by weight to about 93% by weight high density polyethylene, about 5% by weight of low density polyethylene, about 0.9% by weight of mica, about 0.75% by weight of titanium dioxide, about 0.37% of the weight erucamide, and less than about 0.01% by weight of dye.



 

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13 cl, 2 tbl, 4 ex

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7 cl, 1 tbl, 2 ex

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25 cl, 1 dwg, 6 tbl, 2 ex

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12 cl, 2 tbl, 2 ex

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9 cl, 1 tbl, 6 ex

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9 cl, 1 tbl, 8 ex

FIELD: chemistry.

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or formula (II)

, where Ar denotes aryl or heteroaryl; R1, R2 and R11 denote H, C1-C12alkyl, C1-C6alkoxy, hydroxy, C2-C6alkenyl; R3, R4, R14 and R15 denote H; R5-R10 and R16 and R17 denote H or C1-C3alkyl; R12 and R13 denote H or C1-C6alkoxy; n and p = 0 or from 1 to 5; q = 0 or from 1 to 4. The invention also relates to walls of packaging containing said composition, a method of making such packaging and a method of packing oxygen-sensitive material in such packaging.

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23 cl, 2 tbl, 19 dwg, 5 ex

FIELD: chemistry.

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Rubber mixture // 2400498

FIELD: chemistry.

SUBSTANCE: rubber mixture contains the following in pts. wt: copolymer of vinylidene fluoride and hexafluoropropylene SKF-26 63-69, low-molecular weight copolymer SKF-26 ONM 31-37, barite 20-35, vulcafluoro F 1.5-3.0, magnesium oxide 3-6, calcium hydroxide 5-7, triethylbenzylammonium chloride 0.2-0.5, modifier of adhesion strength of vulcanised rubber to metal - cobalt salt of 2-sulfobenzoic acid 0.5-2.0.

EFFECT: high adhesion strength of vulcanised rubber to metal.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to an improved method of making heat stabilisers for chlorine-containing hydrocarbons, specifically to a method of obtaining stearates of bivalent metals used in polymer compositions based on chlorine-containing polymers such as polyvinyl chloride, vinylchloride copolymers, chlorinated polyvinylchloride etc. The method of producing heat stabilisers of chlorine-containing hydrocarbons involves reacting stearic acid and oxides or hydroxides of calcium, zinc, barium, magnesium or lead in form of separate of mixed salts of stearic acid in a solid phase with intense stirring. The process is carried out in the presence of sodium hydroxide or potassium hydroxide in amount of 0.05-0.15% of the mass of stearic acid and propylene carbonate or dimethylformamide, or hexamethapol or sulfolane or dimethylsulfoxide in amount of 0.005-0.05% of the mass of stearic acid at 40-95°C in a double-screw reactor. Catalysts of the process - sodium hydroxide or potassium hydroxide and propylene carbonate, or dimethylformamide, hexamethapol, sulfolane or dimethylsulfoxide facilitate considerable increase in activity of the surface of the substrate and, as a result, increase in the rate of the process and obtaining products in form of a homogeneous highly dispersed powder and prevention of secondary oligomerisation of the end product.

EFFECT: use of the invention enables design of a continuous highly efficient method of producing heat stabilisers of chlorine-containing polymers with high heat stabilising capacity due to formation of products in form a homogeneous highly dispersed powder.

2 cl, 4 tbl, 15 ex

FIELD: chemistry.

SUBSTANCE: invention relates to conductive ink compositions which are widely used in electronic engineering. Described is a conductive ink composition which contains a metal complex compound obtained by reacting at least one metal or metal compound of formula (1) with a compound based on ammonium carbamate or ammonium carbonate of formula (2), (3) or (4), and at least one target additive. Described also is a method of making a metal-containing film by depositing the said conductive ink composition and treatment thereof via oxidation, reduction, thermal treatment, treatment with infrared radiation, UV radiation, electron beams or laser.

EFFECT: composition has high stability and solubility, and its coating on different substrates can be easily burnt even at low temperature ranging from 80 to 300°C to obtain a uniform thin film or a pattern with good conductivity.

38 cl, 10 dwg, 1 tbl, 102 ex

FIELD: medicine.

SUBSTANCE: N (4-anilinophenyl)amide of alkenylsuccinic acid of general formula , where n=6-18 is used as a stabiliser of phenylenediamine type. The stabiliser is introduced into latex in amount 0.1-1.5 weight fractions per 100 weight fractions of rubber as aqueous alkaline liquor. While using the stabiliser of low content of ballast substance less than 3% and high content of fragments of phenylenediamine type, is suitable to be introduced into latex.

EFFECT: maintained effective stabilisation and eliminated odour nuisance.

4 tbl, 12 ex

FIELD: chemistry.

SUBSTANCE: invention relates to improved method of preparing solid particles used as phenolic antioxidants and including in, in fact, crystal form compound of formula: in which one of R1 and R2 independently on each other represent hydrogen atom or C1-C4alkyl, and the other one represents C3-C4alkyl; x represents zero (direct bond) or number from one to three; and Y represents C8-C22alkoxy or groups of incomplete formulas

or in which one of R1' and R2' independently on each other represent hydrogen atom or C1-C4alkyl, and the other one represents C3-C4alkyl; x represents zero (direct bond) or number from one to three; y represents number from two to ten; and z represents number from two to six, in which homogeneous water dispersion is prepared, which includes compound (I) or mixture of such compounds, where R1, R2, R1' R2', Y, x, y and z have values given above, by addition of incomplete ether of fatty acid polyoxyethylene sorbitan and inoculating crystals, and obtained crystals are separated from dispersion and process is carried out until solid particles are obtained. Invention also relates to novel crystal forms pentaerythrite tetrakis-[3-(3,5-ditret-butyl-4-hydroxyphenyl)propionate], (µ-form) of pentaerythrite tetrakis 3-(3,5-ditret-butyl-4-hydroxyphenyl)propionate], crystal form of N,N'-hexane-1,6-diyl-bis-[3-(3,5-ditret-butyl-4-hydroxyphenyl propionamide)], crystal form of N,N'-hexane-1,6-diyl-bis-[3-(3,5-ditret-butyl-4-hydroxyphenyl propionamide)] and crystal modification (β-form) of N,N'-hexane-4,6-diylbis-[3-(3,5-ditret-butyl-4- hydroxyphenyl propionamide)].

EFFECT: elaboration of improved method of preparing solid particles used as phenolic antioxidants.

10 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a photopolymerising composition. The composition contains polysulfone based on 2,2-bis(4-oxyphenyl)propane and 4,4'-dichlorodiphenylsulfone with molecular weight of 40000-56000, a solvent, a polymerisable compound and a photoinitiator. The solvent contained in the composition is styrene, the polymerisable compound is a product of reacting diacyl chloride of methyl-phosphonic acid with glycidyl methacrylate with molecular weight of 417.2 g/mol, with 17.03% and 7.43% content of chlorine and phosphorus respectively, and the photoinitiator is 2,4,6-trimethylbenzoyl diphenylphosphine oxide. The components are in the following ratio (pts. wt): polysufone based on 2,2-bis(4-oxyphenyl)propane and 4,4'-dichlorodiphenylsulfone with molecular weight of 40000-56000 35-45, styrene 65-55, product of reacting diacyl chloride of methyl-phosphonic acid with glycidyl methacrylate with molecular weight of 417.2 g/mol, with 17.03% and 7.43% content of chlorine and phosphorus respectively 20-30, 2,4,6-trimethylbenzoyl diphenylphosphine oxide 3-5.

EFFECT: invention enables to obtain low flammability materials, enables formation of a coating with thickness of 0,4-0,6 mm in a single process step with minimal percentage of volatile components.

6 ex, 2 tbl

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